error 12263

I have recently been playing in Vmware and created a test server and started getting the 12263 error

I tested a second time with a clean setup and had the error from the get go even before installing ispconfig after completing the debian perfect server guide

I went ahead anyway and installed ispconfig and then suphp and everything is fine but I still get the 12263 error but only on ports 80 and 81 in https mode
ie is I go https://mydomain.com:81 I get the error 12263 but if I go https://mydomain.com it works. so it stops me from accessing ispconfig via a secure connection on port 80 or 81